diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml
new file mode 100644
index 00000000..bef56379
--- /dev/null
+++ b/.github/FUNDING.yml
@@ -0,0 +1,3 @@
+github: [tibbi]
+patreon: tiborkaputa
+custom: ["https://www.paypal.me/SimpleMobileTools", "https://www.simplemobiletools.com/donate"]
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/fragments/ContactsFragment.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/fragments/ContactsFragment.kt
new file mode 100644
index 00000000..6feb6c18
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/fragments/ContactsFragment.kt
@@ -0,0 +1,6 @@
+package com.simplemobiletools.dialer.fragments
+
+import android.content.Context
+import android.util.AttributeSet
+
+class ContactsFragment(context: Context, attributeSet: AttributeSet) : MyViewPagerFragment(context, attributeSet)
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/fragments/MyViewPagerFragment.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/fragments/MyViewPagerFragment.kt
new file mode 100644
index 00000000..93bbad07
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/fragments/MyViewPagerFragment.kt
@@ -0,0 +1,28 @@
+package com.simplemobiletools.dialer.fragments
+
+import android.content.Context
+import android.util.AttributeSet
+import androidx.coordinatorlayout.widget.CoordinatorLayout
+import com.simplemobiletools.commons.extensions.underlineText
+import com.simplemobiletools.dialer.activities.SimpleActivity
+import com.simplemobiletools.dialer.extensions.config
+import com.simplemobiletools.dialer.helpers.Config
+import com.simplemobiletools.dialer.models.Contact
+import kotlinx.android.synthetic.main.fragment_letters_layout.view.*
+
+abstract class MyViewPagerFragment(context: Context, attributeSet: AttributeSet) : CoordinatorLayout(context, attributeSet) {
+    protected var activity: SimpleActivity? = null
+    protected var allContacts = ArrayList<Contact>()
+
+    private var lastHashCode = 0
+    private lateinit var config: Config
+
+    fun setupFragment(activity: SimpleActivity) {
+        config = activity.config
+        if (this.activity == null) {
+            this.activity = activity
+
+            fragment_placeholder_2?.underlineText()
+        }
+    }
+}
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/models/Contact.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/models/Contact.kt
new file mode 100644
index 00000000..d84df10a
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/models/Contact.kt
@@ -0,0 +1,95 @@
+package com.simplemobiletools.dialer.models
+
+import com.simplemobiletools.commons.extensions.normalizeString
+import com.simplemobiletools.commons.helpers.SORT_BY_FIRST_NAME
+import com.simplemobiletools.commons.helpers.SORT_BY_MIDDLE_NAME
+import com.simplemobiletools.commons.helpers.SORT_DESCENDING
+
+data class Contact(var id: Int, var prefix: String, var firstName: String, var middleName: String, var surname: String, var suffix: String,
+                   var photoUri: String, var phoneNumbers: ArrayList<PhoneNumber>, var source: String, var starred: Int, var contactId: Int, var thumbnailUri: String,
+                   var organization: Organization) : Comparable<Contact> {
+    companion object {
+        var sorting = 0
+        var startWithSurname = false
+    }
+
+    override fun compareTo(other: Contact): Int {
+        var firstString: String
+        var secondString: String
+
+        when {
+            sorting and SORT_BY_FIRST_NAME != 0 -> {
+                firstString = firstName.normalizeString()
+                secondString = other.firstName.normalizeString()
+            }
+            sorting and SORT_BY_MIDDLE_NAME != 0 -> {
+                firstString = middleName.normalizeString()
+                secondString = other.middleName.normalizeString()
+            }
+            else -> {
+                firstString = surname.normalizeString()
+                secondString = other.surname.normalizeString()
+            }
+        }
+
+        if (firstString.isEmpty() && firstName.isEmpty() && middleName.isEmpty() && surname.isEmpty()) {
+            val fullCompany = getFullCompany()
+            if (fullCompany.isNotEmpty()) {
+                firstString = fullCompany.normalizeString()
+            }
+        }
+
+        if (secondString.isEmpty() && other.firstName.isEmpty() && other.middleName.isEmpty() && other.surname.isEmpty()) {
+            val otherFullCompany = other.getFullCompany()
+            if (otherFullCompany.isNotEmpty()) {
+                secondString = otherFullCompany.normalizeString()
+            }
+        }
+
+        var result = if (firstString.firstOrNull()?.isLetter() == true && secondString.firstOrNull()?.isLetter() == false) {
+            -1
+        } else if (firstString.firstOrNull()?.isLetter() == false && secondString.firstOrNull()?.isLetter() == true) {
+            1
+        } else {
+            if (firstString.isEmpty() && secondString.isNotEmpty()) {
+                1
+            } else if (firstString.isNotEmpty() && secondString.isEmpty()) {
+                -1
+            } else {
+                if (firstString.toLowerCase() == secondString.toLowerCase()) {
+                    getNameToDisplay().compareTo(other.getNameToDisplay(), true)
+                } else {
+                    firstString.compareTo(secondString, true)
+                }
+            }
+        }
+
+        if (sorting and SORT_DESCENDING != 0) {
+            result *= -1
+        }
+
+        return result
+    }
+
+    fun getNameToDisplay(): String {
+        var firstPart = if (startWithSurname) surname else firstName
+        if (middleName.isNotEmpty()) {
+            firstPart += " $middleName"
+        }
+
+        val lastPart = if (startWithSurname) firstName else surname
+        val suffixComma = if (suffix.isEmpty()) "" else ", $suffix"
+        val fullName = "$prefix $firstPart $lastPart$suffixComma".trim()
+        return if (fullName.isEmpty() && organization.isNotEmpty()) {
+            getFullCompany()
+        } else {
+            fullName
+        }
+    }
+
+    fun getFullCompany(): String {
+        var fullOrganization = if (organization.company.isEmpty()) "" else "${organization.company}, "
+        fullOrganization += organization.jobPosition
+        return fullOrganization.trim().trimEnd(',')
+    }
+}
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/models/Organization.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/models/Organization.kt
new file mode 100644
index 00000000..8340cebc
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/models/Organization.kt
@@ -0,0 +1,7 @@
+package com.simplemobiletools.dialer.models
+
+data class Organization(var company: String, var jobPosition: String) {
+    fun isEmpty() = company.isEmpty() && jobPosition.isEmpty()
+
+    fun isNotEmpty() = !isEmpty()
+}
diff --git a/app/src/main/kotlin/com/simplemobiletools/dialer/models/PhoneNumber.kt b/app/src/main/kotlin/com/simplemobiletools/dialer/models/PhoneNumber.kt
new file mode 100644
index 00000000..56900719
--- /dev/null
+++ b/app/src/main/kotlin/com/simplemobiletools/dialer/models/PhoneNumber.kt
@@ -0,0 +1,3 @@
+package com.simplemobiletools.dialer.models
+
+data class PhoneNumber(var value: String, var type: Int, var label: String, var normalizedNumber: String?)
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index e119ba87..0f59b8f8 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,6 +1,23 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
+    <com.google.android.material.tabs.TabLayout
+        android:id="@+id/main_tabs_holder"
+        android:layout_width="match_parent"
+        android:layout_height="48dp"
+        app:elevation="6dp"
+        app:tabIndicatorColor="@android:color/white"
+        app:tabIndicatorHeight="2dp"
+        app:tabMinWidth="150dp"
+        app:tabSelectedTextColor="@android:color/white" />
+
+    <com.simplemobiletools.commons.views.MyViewPager
+        android:id="@+id/viewpager"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_below="@+id/main_tabs_holder" />
+
 </RelativeLayout>
diff --git a/app/src/main/res/layout/fragment_contacts.xml b/app/src/main/res/layout/fragment_contacts.xml
new file mode 100644
index 00000000..23bfe6c3
--- /dev/null
+++ b/app/src/main/res/layout/fragment_contacts.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<com.simplemobiletools.contacts.pro.fragments.ContactsFragment
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/contacts_fragment"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <include layout="@layout/fragment_letters_layout"/>
+
+</com.simplemobiletools.contacts.pro.fragments.ContactsFragment>
diff --git a/app/src/main/res/layout/fragment_letters_layout.xml b/app/src/main/res/layout/fragment_letters_layout.xml
new file mode 100644
index 00000000..bea2b84c
--- /dev/null
+++ b/app/src/main/res/layout/fragment_letters_layout.xml
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="utf-8"?>
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <RelativeLayout
+        android:id="@+id/fragment_wrapper"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/fragment_placeholder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_centerHorizontal="true"
+            android:alpha="0.8"
+            android:gravity="center"
+            android:paddingStart="@dimen/activity_margin"
+            android:paddingTop="@dimen/activity_margin"
+            android:paddingEnd="@dimen/activity_margin"
+            android:text="@string/no_contacts_found"
+            android:textSize="@dimen/bigger_text_size"
+            android:textStyle="italic"
+            android:visibility="gone" />
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/fragment_placeholder_2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_below="@+id/fragment_placeholder"
+            android:layout_centerHorizontal="true"
+            android:background="?attr/selectableItemBackground"
+            android:gravity="center"
+            android:padding="@dimen/activity_margin"
+            android:text="@string/change_filter"
+            android:textSize="@dimen/bigger_text_size"
+            android:visibility="gone" />
+
+        <com.simplemobiletools.commons.views.MyRecyclerView
+            android:id="@+id/fragment_list"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:clipToPadding="false"
+            android:scrollbars="none"
+            app:layoutManager="com.simplemobiletools.commons.views.MyLinearLayoutManager" />
+
+        <com.reddit.indicatorfastscroll.FastScrollerView
+            android:id="@+id/letter_fastscroller"
+            android:layout_width="32dp"
+            android:layout_height="wrap_content"
+            android:layout_alignParentEnd="true"
+            android:paddingTop="@dimen/big_margin"
+            android:paddingBottom="@dimen/big_margin" />
+
+        <com.reddit.indicatorfastscroll.FastScrollerThumbView
+            android:id="@+id/letter_fastscroller_thumb"
+            android:layout_width="@dimen/fab_size"
+            android:layout_height="match_parent"
+            android:layout_alignTop="@+id/letter_fastscroller"
+            android:layout_alignBottom="@+id/letter_fastscroller"
+            android:layout_marginEnd="@dimen/activity_margin"
+            android:layout_toStartOf="@+id/letter_fastscroller" />
+
+    </RelativeLayout>
+
+    <com.simplemobiletools.commons.views.MyFloatingActionButton
+        android:id="@+id/fragment_fab"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_margin="@dimen/activity_margin"
+        android:src="@drawable/ic_plus_vector" />
+
+</merge>